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   <script>
    //  Array.includes()
    var xiyouji=['白骨精','唐僧','孙悟空']
    var res=xiyouji.includes('孙悟空')
    console.log(res);

    // **幂运算 等同于Math.pow()
    console.log(2**3);
    console.log(Math.pow(2,3));
   </script>
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